Fifteen years after murdering his sister on Halloween Night 1963, Michael Myers escapes from a mental hospital and returns to the small town of Haddonfield, Illinois to kill again.
Strange things begin to occur as a tiny California coastal town prepares to commemorate its centenary. Inanimate objects spring eerily to life; Rev. Malone stumbles upon a dark secret about the town's founding; radio announcer Stevie witnesses a mystical fire; and hitchhiker Elizabeth discovers the mutilated corpse of a fisherman. Then a mysterious iridescent fog descends upon the village, and more people start to die.
The joke's on absent-minded scientist Wayne Szalinski when his troublesome invention shrinks him, his brother and their wives so effectively that their children think they've completely disappeared. Of course, this gives the kids free rein to do anything they want, unaware that their parents are watching every move.
